Finding the Fourth Proportional to 1,238,247.71, 1,708,057.97 and 778,634.63
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Solution
The fourth proportional to 1,238,247.71, 1,708,057.97 and 778,634.63 is: 1,074,060.60
Step by Step Solution
- Step 1: Write the proportion equation
1,238,247.71 : 1,708,057.97 = 778,634.63 : x - Step 2: Convert to fraction form
1,238,247.71/1,708,057.97 = 778,634.63/x - Step 3: Cross multiply
1,238,247.71x = 1,708,057.97 × 778,634.63 - Step 4: Simplify right side
1,238,247.71x = 1,329,953,073,056.04 - Step 5: Solve for x
x = 1,329,953,073,056.04/1,238,247.71 - Step 6: Final answer
x = 1,074,060.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.